Mechanical movement.



No. 627.554. Patented Jung 27, |899.v

o. wElSE.

MECHANICAL MOVEMENT.

(Application filed May 5, 189B.;

(No Model.) 2 Sheets-$heel l.

j je 12g! jl /V No. 627,554. Patented lune 27, |899.

0. WEISE.

MECHANICAL MOVEMENT.

n led May 5. 1898 2 Sheets Sheet 2.

(No Model.)

d f @L 'me ramal: News co more Lmw wAsHxNGToN n c UNITED STATES PATENTOFFICE.

OTTO WEISE, OF ASCHERSLEBEN, GERMANY.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 627,554, dated June27', 1899.

' Application inea May 5,1898. semina. 679,809. N0 model.)

To a/ZZ whom, it nto/.y concern:

Be it known that I, OTTO WEIsE, a subject of the King of Prussia,Emperor of Germany, residingy at Aschersleben, in the Province ofSaxony, Kingdom o f Prussia, and German Empire, have invented certainnew and useful Improvements inMechanical Movements, of which thefollowing is a full, clear, and eX- act description.

This invention relates to that class of mechanism employed in puttingscrews into and out of action; and its object is to provide means forthe rapid adjustment of the gripping-jaws in engineers7 or joinersbenchvises and the like or the quick return of the screw in other formsof mechanism-as, for example, in drills. v

The invention consists generally in mounting the screwed spindle intabush in which it slides longitudinally, but upon rotation carries thebush around owing to a keyway-andfeather connection between the two, andin so forming one collar of the bush with a pawlshaped tooth thatrotation in one direction acts upon a specially-formed sliding nut tothrow the screw out of gear, but rotation in the reverse directionallows the nut to come into gear again.

The mode of carrying the invention into effect is illustrated in theaccompanying sheet of drawings, as follows:

Figure l is a longitudinal section showing the nut in gear. Fig. 2 is atransverse section with the disengaged position of the nut indicated bydotted lines. Fig. 3 isa plan, partly in section.

Referring t'o the drawings, the screwed spindle a is carried in a bushb, and While it is free to move longitudinally therein it is attachedvby a feather c, so that a rotation of the screw also revolves the bush.On the front side of the wooden framework m of the joiners bench abracket f is attached, and opposite to this, on t-he other side, a plate7L is Xed, and the bush b is carried in suitable bearings formed inthese two pieces. A half-nut e slides in a T-shaped groove 'formedbetween the proj ections f3 of the bracket f, and this nut carries aspring-pawl d,which engages under certain conditions with a pawl-shapedtooth b2, formed on an annulaiflange b' at one end of the bush-b.

When it is desired to keep the screw-spindle in gear and so operate itas a means of gripping an object, the spindle a is turnedcontra-clockwise relatively to Fig. 2. The nut e., having a slightclearance, as shown in Fig. 3, in its T-headed slide, moves slightlyforward, and a chamferedportion f2 cornes under a corresponding chamferformed on the portion f of the bracket. The nut e is prevented fronirising by the chamfer, and the rotation of the bush and its pawl portionb2 only forces the pawl d Aback against its spring 'L' into a recess anddoes not lift the nut out of gear. Y

To throw the nut e out of gear, the spindle a is rotated in a clockwisedirection until the projection b? engages with the spring-pawl d, and asthe nut also moves slightly backward and clears the chamfer]c2 theprojection b2 shown in dotted lines in Fig. 2 out of gear withthe-screw. The screw-spindle a can now be displaced longitudinally inthe bush b, so that a rapid adjustmentof this spindle with itsattachments may be made. When the adjustment has been made, a furtherrotation of the screw in the same direction frees the pawl d and allowsthe nut c to drop back into gear by its own weight.

It is evident that this improved mechanism can be applied to all formsof vises or presses in which a screw is employed, and also may beadapted to drills or machine-tools where a 'quick return or rapidadjustment of a screwed spindle isnecessary, and all without departingfrom the subject of the present invention.

What I claim, and desire to secure by Letters Patent, is

1. The combination withaframework, of a bushing mounted to turn thereinand having an internal feather, a screw mounted in the bushing andhaving a way for the reception of the feather, a vertically-disposedbracket attached to one side of the framework adjacent to one end of thebushing, a nut mounted to slide in the bracket and resting by gravity onthe screw, an annular flange formed'on the end of the bushing adjacentto the nut Aand pawl d elevate the nut into the position and having aperipheral tooth or projection, in the bracket and normally engaging theand a pawl mounted on the nut and bearing screw, and a pawl attached tothe nut and against the edge of the flange to lift the nut ruiming onthe periphery of the flange to lift 15 when the bushing isturned in adirection to the nut when the bushingis turned to engage 5 engage thetooth or projection with the pawl. the tooth with the pawl.

2. The combination with aframcworlz, of a In Witness whereof I subscribemy signabushing mounted to turn therein, a screw l ture in presence oftwo witnesses'. mounted in the bushing to turn therewith y f 7 and slidetherein, a ange attached to one OPPO EISE' Io end of the bushing andhaving a peripheral lVitneSses:

tooth, a bracket attached to the framework HENRY W. DIEDERICH, adjacentto the flange, a nut mounted to slide E. PEINEMANN.

